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BlockDevice -> DiskDevice.

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BlockDevice was the wrong name for this abstraction, since a block device
is a type of file in a unix system, and we should use that name for that
concept in the fs implementation.
This commit is contained in:
Andreas Kling 2018-10-16 11:21:49 +02:00
parent 72bb80a9ae
commit 9cd0a34b5c
12 changed files with 62 additions and 64 deletions
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30
VirtualFileSystem/DiskBackedFileSystem.h Normal file
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#pragma once
#include "FileSystem.h"
#include <AK/ByteBuffer.h>
class DiskBackedFileSystem : public FileSystem {
public:
virtual ~DiskBackedFileSystem() override;
DiskDevice& device() { return *m_device; }
const DiskDevice& device() const { return *m_device; }
unsigned blockSize() const { return m_blockSize; }
protected:
explicit DiskBackedFileSystem(RetainPtr<DiskDevice>&&);
void setBlockSize(unsigned);
void invalidateCaches();
ByteBuffer readBlock(unsigned index) const;
ByteBuffer readBlocks(unsigned index, unsigned count) const;
bool writeBlock(unsigned index, const ByteBuffer&);
bool writeBlocks(unsigned index, unsigned count, const ByteBuffer&);
private:
unsigned m_blockSize { 0 };
RetainPtr<DiskDevice> m_device;
};